<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
   "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
   <title>Hello World</title>
</head>
<body>
   <a href="javascript:{alert('Hello World!');}">Hello World!</a>
</body>
</html>